<!DOCTYPE html>
<html>
  <body>
    <form action="/release/add" method="POST">
      <input type="hidden" name="mediums.0.track.00.name" value="Foo" />
      <input type="hidden" name="mediums.0.track.01.name" value="Bar" />
      <input type="hidden" name="mediums.0.track.02.name" value="Baz" />
      <button type="submit">Submit</button>
    </form>
  </body>
</html>
